121042600 has 96 divisors (see below), whose sum is σ = 332121600. Its totient is φ = 40147200.

The previous prime is 121042589. The next prime is 121042609. The reversal of 121042600 is 6240121.

It is a super-2 number, since 2×121042600² = 29302622029520000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121042609) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42006 + ... + 44794.

It is an arithmetic number, because the mean of its divisors is an integer number (3459600).

Almost surely, 2^121042600 is an apocalyptic number.

121042600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121042600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166060800).

121042600 is an abundant number, since it is smaller than the sum of its proper divisors (211079000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121042600 is a wasteful number, since it uses less digits than its factorization.

121042600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2843 (or 2834 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 121042600 is about 11001.9361932344. The cubic root of 121042600 is about 494.6667825074. Note that the first 3 decimals are identical.

Adding to 121042600 its reverse (6240121), we get a palindrome (127282721).

The spelling of 121042600 in words is "one hundred twenty-one million, forty-two thousand, six hundred".